Structural shape for columns



UNITED STATEs PATENT OFFICE.-

EDWARD M. BUTZ, OF ALLEGHENY, PENNSYLVANIA.

STRUCTURAL SHAPE FOR COLUMNS, PILASTERS, 80C.

SPECIFICATION forming part of Letters Patent N 0. 304,785, datedSeptember 9, 18 84.

Application filed January 10, 1884. (No model.)

hereby declare the following to be a full, clear,

concise, and exact description thereof, reference being had to theaccompanying drawings, making a part of this specification, in

which-like letters indicating like parts- Figure 1, Sheet 1, is a viewin perspective of a metal shape plate or bar adapted for use in columnsor girders embodying my invention; Fig. 2, a transverse section throughthe same; Fig. 3, a perspective section of a column illustrating anapplication of the same; Fig. 4, a plane transverse section through thesame; Figs. 5 and 6, Sheet 2, a view in perspeciive and a transversesection, respectively, of a modification of the plate shown in thepreceding figures; and Figs. 7 and 8, a perspective and a plan section,respectively, of a column illustrating an application of the plate shownin Figs. 5 and 6.

My invention relates to the construction of rolled-metal columns,pilasters, or girders for buildings, bridges, and other structures; and

my improvements consist in a rolled-metal.

plate or bar, of section, as herein shown and described, and in' acomposite pilaster, column, or girder having one or more of its websformed of a plate of said section, all as hereinafter fully set forth.

To carry out my invention I form, of rolled iron or steel, a plateorbar, A, the transverse section of which is that of a trough orchannel, having an inclined flange, a, at each of its sides, and anoutwardly-projecting tongue or face, a, at and adjacent to its center.The metal of the plate A may be so bent that the tongue or face a mayeither be bounded by plane surfaces, as in Figs. 1 to 4, or by asemicircle or other curved surface, as in Figs. 5 to 8, the essentialfeature of my invention in this particular consisting in theinterposition of a central tongue or raised portion projecting from theflat surface between the side flanges of the plate.

My invention is specially applicable in the construction of pilastersfor wrought-metal fronts for buildings, for the purpose of. embodyingtherein strength and architectural ornamentation. To form a compositecolumn, pilaster, or girder for such or for other uses, I take one ormore shapes, A, of section, as described, and uniteit or them by rivetsor bolts to one or more rolled plates, which may be of similar or of anyother section desired. A column composed of four similar shapes, A,having plane-faced tongues or projections and united by their sideflanges, is shown in Figs. 3 and 4, and a column which is similar,except in the particular of having curved-faced tongues, is shown inFigs. 7 and 8.

It will be obvious that by combiningashape A with one or more shapes ofdifferent sections the transverse form and dimensions of the columns maybe varied within a wide range, as may be desired or required.

I claim herein as my invention 1. A structural rolled-metal plate, ofshape or section as described, adapted to serve as a member of a column,pilaster, or girder, said plate being in the form of atrough or channelhaving an inclined flange at each side and a central tongue or faceprojecting above a flat surface adjacent to each side flange,substantially as set forth.

2. A composite column, pilaster, or girder formed of rolled-metal platesunited at their edges, and having upon one or more of its faces a webformed of a plate of shape or section substantially as herein describedand shown. 1

In testimony whereof Ihaveh'ereunto set my hand.

EDWARD M. BUTZ. Witnesses:

J. SNOWDEN BELL, R. H. WVHITTLEsEY.

